Recently I was working on my simple logic game called 5 To 1. As I wanted to make my job quicker with levels I created tool, that would easily help me with achieving multiple screenshots at the same time.
I collected my 3D works from my past. Mostly those will be images from Unity and Blender.
Material in link below explains concept of attributes in C# and how those can be used in Unity Engine, as well as process of creating your own attributes.
How to quickly move your Lego creation into 3D software.